Last frost date in Shawnee, KS
The average last frost in Shawnee is April 16. By May 1 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about October 22, which leaves 188 frost-free days. An early freeze before October 9 happens one year in ten.
- Safe after (10% risk)
- May 1
- Average first frost
- Oct 22
- Frost-free season
- 188 days
- Hard freeze (28°F) ends
- Apr 5
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2255°
- FriOct 2357°
- SatOct 2456°
- SunOct 2556°
- MonOct 2650°
- TueOct 2747°
- WedOct 2850°
Planting calendar for Shawnee
Windows count forward or back from the average frost dates above. Click a crop for dates across Kansas.
TomatoesApr 23–May 7
PumpkinsApr 30–May 14
SunflowersApr 16–May 7
CucumbersApr 30–May 7
CornApr 23–May 7
Sweet potatoesMay 7–May 21
WatermelonApr 30–May 14
Green beansApr 23–May 14
ZucchiniApr 23–May 7
OkraMay 7–May 21
PeppersApr 30–May 14
BasilApr 23–May 7
Butternut squashApr 23–May 7
CantaloupeApr 30–May 14
EggplantApr 30–May 14
PotatoesMar 19–Apr 2
OnionsMar 5–Mar 26
CarrotsMar 26–Apr 30
LettuceApr 2–Apr 23
BroccoliMar 19–Apr 2
BeetsMar 19–Apr 30
PeasMar 5–Mar 19
CabbageMar 19–Apr 2
RadishesMar 12–Apr 23
Brussels sproutsApr 2–Apr 16
SpinachMar 5–Mar 26
CilantroApr 2–Apr 23
KaleMar 19–Apr 2
Collard greensMar 19–Apr 2
TurnipsMar 19–Apr 2
DillApr 16–Apr 30
CeleryApr 23–Apr 30
CauliflowerApr 2–Apr 16
LeeksApr 2–Apr 16
Swiss chardApr 2–Apr 30
ParsleyApr 2–Apr 23
Tulip bulbsOct 8–Nov 12
GarlicOct 1–Nov 5
Daffodil bulbsSep 24–Nov 5
StrawberriesMar 19–Apr 2
AsparagusMar 19–Apr 2Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Apr 1 | Apr 16 | May 1 | Oct 9 | Oct 22 | Nov 2 |
| Hard freeze, 28°F | Mar 19 | Apr 5 | Apr 22 | Oct 17 | Oct 31 | Nov 14 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Bonner Springs (USC00140957) sits 5.8 miles from the center of Shawnee at 850 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Shawnee, KS?
The average last frost date in Shawnee is April 16, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after May 1.
When is the first frost in Shawnee?
The first frost in fall usually comes around October 22. One year in ten it arrives before October 9.
How long is the growing season in Shawnee?
About 188 days between the average last and first frost.
When should I plant tomatoes in Shawnee?
Plant tomato seedlings outside from April 23 to May 7. Start seeds indoors six to eight weeks earlier.
Nearby in Kansas
- LenexaApr 10
- Kansas CityApr 4
- Prairie VillageApr 4
- OlatheApr 10
- Overland ParkApr 10
- LeawoodApr 8
- GardnerApr 13
- LeavenworthApr 12
- LawrenceApr 12
- TopekaApr 16
- EmporiaApr 15
- ManhattanApr 16